$0.70Control Horn – 50mm (~ 2 inches)

myminifactory

A 3D printable control horn for a mid-size model aircraft constructed from foamboard, cardboard and/or balsa, with a wingspan of approximately 1 to 1.5 meters (~39 to 60 inches). The control horn has a 50mm (~2 inches) mounting base to provide positive control authority with minimum flex and/or flutter of the control surfaces. It works well with many RC aircrafts for 3D aerobatics. It can be easily 3D printed, without any support, on a modern inexpensive 3D Printer with a variety of materials, including PLA, PETG, ABS and many other types of printable materials. PLA works well for this application, unless the model aircraft will be kept or stored in a high temperature environment such as a parked car in the summer, where the temperature may exceed ~55 C (~ 130 F). At such temperature, PLA will likely deform and warp. Therefore, I strongly recommend using PETG or ABS instead, to print part. I have successfully used this horn since early 2018. It is a good upgrade for many foamboard kits.